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Finding the Fourth Proportional to 553,578.57, 763,994.86 and 338,860.53

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Solution

The fourth proportional to 553,578.57, 763,994.86 and 338,860.53 is: 467,662.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,578.57 : 763,994.86 = 338,860.53 : x
  2. Step 2: Convert to fraction form
    553,578.57/763,994.86 = 338,860.53/x
  3. Step 3: Cross multiply
    553,578.57x = 763,994.86 × 338,860.53
  4. Step 4: Simplify right side
    553,578.57x = 258,887,702,329.73
  5. Step 5: Solve for x
    x = 258,887,702,329.73/553,578.57
  6. Step 6: Final answer
    x = 467,662.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.